gaijintouyin

matlab实现qpsk通信的调制。该调制为源程序，请大家指正。谢谢(matlab to achieve qpsk communication modulation. The modulation for the source code, please correct me. Thanks)

说明：  我边写的关于无限通信中的瑞丽分布的仿真程序.(while I was on the communication of unlimited distribution of Ruili simulation program.)

在这里设计的是时分复用系统，就是要将三路8比特数据复用到同一信道上进行传输(Here is the design of time division multiplexing system, is to take the road three 8 bit data multiplexed onto the same channel for transmission)

利用相关角度根据对应的转换矩阵完成惯性坐标系到载机坐标系的转换(Coordinate conversion)

ex5_11 频率采样技术：低通，朴素法 ex5_12 频率采样技术：低通, 最优法T1 & T2 分别用朴素法和最优法，并且在时域和频域进行比较。(ex5_11 sampling frequency: low-pass, a simple method ex5_12 sampling frequency: low-pass, optimal method T1 & T2, respectively, and the optimal use of a simple law, and in time domain and frequency domain comparison.)

说明：  从国外ECC网站上找到的，可以作为初始学习的参考程序。(from abroad ECC found on the site, as the initial study of the reference program.)

In numerical analysis, Newton s method (also known as the Newton–Raphson method), named after Isaac Newton and Joseph Raphson, is a method for finding successively better approximations to the roots (or zeroes) of a real-valued function. The algorithm is first in the class of Householder s methods, succeeded by Halley s method. The method can also be extended to complex functions and to systems of equations.

用C语言编写的IEEE34节点系统画图例程，用于matlab(the graghing programme of IEEE34 node system written in C, for matlab )

处理图像的色彩，比如将暗色调的图片处理得更加鲜艳。(Color image processing, such as the dark tones of the image processing may be more vivid.)

说明：  This is an E-book for signal processing using MATLAB.